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        <title>wavesurfer.js | Annotation tool</title>

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                    <li><a href="/"><i class="glyphicon glyphicon-home"></i></a></li>
                </ul>

                <h1 itemprop="name">wavesurfer.js Annotations Tool</h1>
            </div>

            <div id="demo">
                <p id="subtitle" class="text-center text-info">&nbsp;</p>

                <div id="wave-timeline"></div>

                <div id="waveform">
                    <!-- Here be waveform -->
                </div>

                <div class="row" style="margin: 30px 0">
                    <div class="col-sm-8">
                        <p>
                            Click on a region to enter an annotation.<br />
                            Shift-click plays a region in a loop.
                        </p>
                    </div>

                    <div class="col-sm-2">
                        <button class="btn btn-primary btn-block" data-action="play">
                            <span id="play">
                                <i class="glyphicon glyphicon-play"></i>
                                Play
                            </span>

                            <span id="pause" style="display: none">
                                <i class="glyphicon glyphicon-pause"></i>
                                Pause
                            </span>
                        </button>
                    </div>

                    <div class="col-sm-2">
                        <button class="btn btn-info btn-block" data-action="export" title="Export annotations to JSON">
                            <i class="glyphicon glyphicon-file"></i>
                            Export
                        </button>
                    </div>
                </div>
            </div>

            <form role="form" name="edit" style="opacity: 0; transition: opacity 300ms linear; margin: 30px 0;">
                <div class="form-group">
                    <label for="start">Start</label>
                    <input class="form-control" id="start" name="start" />
                </div>

                <div class="form-group">
                    <label for="end">End</label>
                    <input class="form-control" id="end" name="end" />
                </div>

                <div class="form-group">
                    <label for="note">Note</label>
                    <textarea id="note" class="form-control" rows="3" name="note"></textarea>
                </div>

                <button type="submit" class="btn btn-success btn-block">Save</button>
                <center><i>or</i></center>
                <button type="button" class="btn btn-danger btn-block" data-action="delete-region">Delete</button>
            </form>

            <div class="row">
                <h4>Region events:</h4>

                <ul>
                    <li><code>region-in</code> – When playback enters a region. Callback will receive the <code>Region</code> object.</li>
                    <li><code>region-out</code>– When playback leaves a region. Callback will receive the <code>Region</code> object.</li>
                    <li><code>region-mouseenter</code> - When the mouse moves over a region.  Callback will receive the <code>Region</code> object, and a <code>MouseEvent</code> object.</li>
                    <li><code>region-mouseleave</code> - When the mouse leaves a region.  Callback will receive the <code>Region</code> object, and a <code>MouseEvent</code> object.</li>
                    <li><code>region-click</code> - When the mouse clicks on a region.  Callback will receive the <code>Region</code> object, and a <code>MouseEvent</code> object.</li>
                    <li><code>region-dblclick</code> - When the mouse double-clicks on a region.  Callback will receive the <code>Region</code> object, and a <code>MouseEvent</code> object.</li>
                    <li><code>region-created</code> – When a region is created. Callback will receive the <code>Region</code> object.</li>
                    <li><code>region-updated</code> – When a region is updated. Callback will receive the <code>Region</code> object.</li>
                    <li><code>region-update-end</code> – When dragging or resizing is finished. Callback will receive the <code>Region</code> object.</li>
                    <li><code>region-removed</code> – When a region is removed. Callback will receive the <code>Region</code> object.</li>
                </ul>

                <h4>Regions Plugin</h4>

                <p>Regions are visual overlays on waveform that can be used to play and
                    loop portions of audio. Regions can be dragged and resized.</p>

                <p>Visual customization is possible via CSS (using the selectors
                    <code>.wavesurfer-region</code> and <code>.wavesurfer-handle</code>).</p>

                <p>To enable the plugin, add the script <code>plugin/wavesurfer.regions.js</code> to
                    your page.</p>

                <p>After doing that, use <code>wavesurfer.addRegion()</code> to create Region objects.</p>

                <h5>Exposed Methods</h5>

                <ul>
                    <li><code>addRegion(options)</code> – Creates a region on the waveform. Returns a <code>Region</code> object.  See <a href="#region-options">Region Options</a>, <a href="#region-methods">Region Methods</a> and <a href="#region-events">Region Events</a> below.

                        <ul>
                            <li><strong>Note:</strong> You cannot add regions until the audio has finished loading, otherwise the <code>start:</code> and <code>end:</code> properties of the new region will be set to <code>0</code>, or an unexpected value.</li>
                    </ul></li>
                    <li><code>clearRegions()</code> – Removes all regions.</li>
                    <li><code>enableDragSelection(options)</code> – Lets you create regions by selecting.
                        areas of the waveform with mouse. <code>options</code> are Region objects' params (see <a href="#region-options">below</a>).</li>
		    <li><code>disableDragSelection()</code> - Disables ability to create regions.</li>
                </ul>

                <h5>Region Options</h5>

                <table><thead>
                        <tr>
                            <th>option</th>
                            <th>type</th>
                            <th>default</th>
                            <th>description</th>
                        </tr>
                    </thead><tbody>
                        <tr>
                            <td><code>id</code></td>
                            <td>string</td>
                            <td>random</td>
                            <td>The id of the region.</td>
                        </tr>
                        <tr>
                            <td><code>start</code></td>
                            <td>float</td>
                            <td><code>0</code></td>
                            <td>The start position of the region (in seconds).</td>
                        </tr>
                        <tr>
                            <td><code>end</code></td>
                            <td>float</td>
                            <td><code>0</code></td>
                            <td>The end position of the region (in seconds).</td>
                        </tr>
                        <tr>
                            <td><code>loop</code></td>
                            <td>boolean</td>
                            <td><code>false</code></td>
                            <td>Whether to loop the region when played back.</td>
                        </tr>
                        <tr>
                            <td><code>drag</code></td>
                            <td>boolean</td>
                            <td><code>true</code></td>
                            <td>Allow/dissallow dragging the region.</td>
                        </tr>
                        <tr>
                            <td><code>resize</code></td>
                            <td>boolean</td>
                            <td><code>true</code></td>
                            <td>Allow/dissallow resizing the region.</td>
                        </tr>
                        <tr>
                            <td><code>color</code></td>
                            <td>string</td>
                            <td><code>"rgba(0, 0, 0, 0.1)"</code></td>
                            <td>HTML color code.</td>
                        </tr>
                </tbody></table>

                <h5>Region Methods</h5>

                <ul>
                    <li><code>remove()</code> - Remove the region object.</li>
                    <li><code>update(options)</code> - Modify the settings of the region.</li>
                    <li><code>play()</code> - Play the audio region from the start to end position.</li>
                </ul>

                <h5>Region Events</h5>

                <p>General events:</p>

                <ul>
                    <li><code>in</code> - When playback enters the region.</li>
                    <li><code>out</code> - When playback leaves the region.</li>
                    <li><code>remove</code> - Happens just before the region is removed.</li>
                    <li><code>update</code> - When the region's options are updated.</li>
                </ul>

                <p>Mouse events:</p>

                <ul>
                    <li><code>click</code> - When the mouse clicks on the region.  Callback will receive a <code>MouseEvent</code>.</li>
                    <li><code>dblclick</code> - When the mouse double-clicks on the region.  Callback will receive a <code>MouseEvent</code>.</li>
                    <li><code>over</code> - When mouse moves over the region.  Callback will receive a <code>MouseEvent</code>.</li>
                    <li><code>leave</code> - When mouse leaves the region.  Callback will receive a <code>MouseEvent</code>.</li>
                </ul>
            </div>

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                <div class="col-sm-8">
                    <span xmlns:dct="http://purl.org/dc/terms/" href="http://purl.org/dc/dcmitype/Text" property="dct:title" rel="dct:type">wavesurfer.js</span> by <a href="https://github.com/katspaugh/wavesurfer.js">katspaugh</a> is licensed under a <a rel="license" href="https://opensource.org/licenses/BSD-3-Clause">BSD-3-Clause License</a>.
                </div>

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                    <p>
                        The sound file is from <a href="https://librivox.org/librivox-multilingual-short-works-collection-001-by-various/">librivox.org</a>.
                    </p>
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